Whichever one fits in your mouth best and lets you still reach the trigger....
My friend accidentally shot me at point blank range with a .38 in the thigh in 2003. It was a simple entry and exit wound and the only thing the ER did was give me two gauze strips for each side. I got incredibly lucky on that one.
It felt as if someone heated a steel metal rod and jammed it in and out real fast. I was sore for about two days only and good as new by day three with the craziest looking bruise from it all that I have ever seen. Back squatting on day three like nothing ever happened. I still have a little tiny scar, but that is it. Can't even tell at all.